MESON Chess Problem Database

Problem Display
PID: 231255 (2K3b1/1p3p1r/5k1p/6pP/2P2nP1/B7/1R5b/5Q2 w - - 0 1)

Kubbel, Arvid Ivanovich

Shakhmaty, 1927

2K3b1/1p3p1r/5k1p/6pP/2P2nP1/B7/1R5b/5Q2

#2

7 + 9

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Keys
    • 1.Qa1!
      • threat
        • 2.Re2#
        • 2.Rb6#
      • 1...Ke5
        • 2.Re2#
      • 1...Ke6
        • 2.Rb6#
      • 1...Kg7
        • 2.Rxb7#
      • 1...Sxh5
        • 2.Rb6#
      • 1...Bg1
        • 2.Rb6#
      • 1...Se2
        • 2.Rb6#
      • 1...Sg2
        • 2.Rb6#
      • 1...Sd3
        • 2.Rb6#
      • 1...Sh3
        • 2.Rb6#
      • 1...Sd5
        • 2.Rb6#
      • 1...Se6
        • 2.Rf2#
      • 1...Sg6
        • 2.Rb6#
      • 1...b5
        • 2.Re2#
      • 1...b6
        • 2.Re2#
        • 2.Rxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
  • Actual
    • Q(A);N_PINS(b)
    • Threat
      • DUALS(2)
    • Vars
      • K(d);S_FLIGHT::QAB(A)+R(B),DCHECK
      • K(d);P-FLIGHT::R(B)
      • K(d);S_FLIGHT::QAB(A)+R(B),XP(f)
      • S(b);XP(F)::QAB(A)+R(B),DCHECK
      • B(a);::QAB(A)+R(B),DCHECK
      • S(b);::QAB(A)+R(B),DCHECK
      • S(b);SBLOCK::QAB(A)+R(B),DCHECK
      • P(f);::QAB(A)+R(B)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).